Programming instructions

7.4 EXERCISE PLC Addressing

1) A PLC system consists of an FX3U-64MR (32 I/ 32 O), 1 FX3U-4AD-ADP, an

8 point input module, 2 16-point output modules, 2 SFMs, a 16 point input

module, and another SFM. Determine the addressing.

2) ARE THE FOLLOWING SYSTEMS LEGAL? WHY OR WHY NOT?

A. A 64 I/O main unit (32 I/32 O), [4] 8 point input modules, [6] 8 point output

modules, and [9] SFMs.

B. A 128 I/O main unit (64 I/64 O), [2] SFMs, [2] 48 I/O Extension Units (24

I/24 O each), [1] 16 point input module

C. A 128 I/O main unit (64 I/64 O), [3] SFMs, [2] 48 I/O Extension Units (24

I/24 O each), [1] 16 point input module

D. An 80 I/O main unit (40 I/40 O), [2] 48 I/O Extension Units (24 I/24 O

each), [4] 16 point output modules, [1] 8 point input module

E. An FX3U 64 I/O main unit, [3] FX3U-4AD-ADP, [1] FX3U-4DA-ADP, [1]

FX3U-4AD-PT-ADP, [2] FX3U-4HSX-ADP, [2] FX3U-485-ADP, [1] FX3U-

USB-BD